Regulating valve



Patented Aug. l2,` 1924.

. UNITED STATES HARRY J. RICHTER, 0F W-ILHE'ITE, ILLINOIS.

REGULATING vALvr..

i Application led ASeptemhem-` 1, 1920. Serial No. 407,859.

To all whom t my concern.'

Be it known that- I, HARRY J. Ricirriiii,

a citizen of the United States, residing at 707 Greenwood Ave.,-Wilmette, in the county of Cook and State of' Illinois, have invented anew and useful Improvement in Regulating Valves, of which the followingis a specication.- y

This invention relates to improvements in regulating valvesand moreespecially to that type of regulating valves known as pressureregulating valves or reducing valves which are designed to be placed ina steam line for the purpose of constantly delivering steam at apredetermined pressure regardless of variations in the initial pressureIor volume of discharge. Although -the valve is described and referredto in connection with its use in a steam' line, it is obvious, that,without detracting from the spirit of this invention, ythe valve may beused with any other fluid.

One of the features of my invention is to provide -a regulating valve ofthe type referred to above, which will be positive, accurate, and quickin operation, and which will not pulsate orchattei even though the steamdemand be very slight or intermittent. l

The features referred to above, and others, will appear more fully as Iproceed with -my specification.

In the accompanying drawing there is shown a vertical cross section-alview of a valve embodying the features' of my invention.

As shown in said drawing, 1 indicates the opening into the valve whichis connected to the boiler or other source of supply of steam. rlil'riecourse of travel of steam into the valve is indicated by the arrow. The

, main passage 1 into the valve passes below the obliquely arrangeddiaphragm 2, thence upwardly through the circular opening 3 in thediaphragm 2, thence outwardly from the valve on the service side,through the passage 4 to which is attached thedeliv-V ery pipe 5.

The opening 3 in the diaphragm 2 is con-4 trolled by a verticallymovable valve disk 6 mounted on the stem 7, and provided with a radialflange 8 adapted to rest on a seat 9 at thel edge ofthe openin 3.Arranged besurrounding the lower end of the stem 7 is a s iral s ring 12tending to raise the valve dis and old the ilange 8 in engagement withthe seat 9. The lower end of the stem 7 is guided in a hole 13 providedin the upwardly projecting boss 15. The upper end of the valve stem 7has mounted upon it a piston 16 adapted to op'- erate in a cylinder 18.Communication between the ypassage 1 and the space 20 in the cylinder 18above the piston 16 is afforded by means of the port 21leading from thepassage 1 to the openin 22, and the port 23 leading from the opening 22to the space 20. The opening 22 is controlled by an auX- iliary valvecomprising the valve disk 25 mountedon the vertically slidable stem 26.The valve disk 25 rests on a spiral spring 30 tending to hold the diskup to close the opening 22. The valve stein 36 is slidably mounted in asuitable bushing .31. The upper end of the valve stem 26 bears against ametal diaphragm 32 which is adapted to be pressed down by the spiralspring 33 which in turn is adapted to be adjusted by means oftheadjusting screw 34. A small pipe 35 is'adapted to admit steam from thedelivery pipe '5 into the port 36 which leads to the space 37 below thediaphragni32,

In operation, the valve is controlled by the reduced pressure on theservice side com-v municatin through the pipe 35 to the undei -side othe diaphragm 32 which is balanced by the spring 33 which can beadjusted by the screw 35 for any pressure that may be desired on theoutlet or service side of the valve. The small auxiliary valve disk -25con-trolling the opening 22 is held in oontact with the diaphragm 32 bymeans o the spring 30 and opens or closes with changes in-'the pressureof the steam in the pipe 5 on the service side of the yalve. When theopening 22 is opened, the initial pressure from the boiler side of thevalve is admitted into the space 20 above the'piston 16 by means of theports 21 and 23 and opening 22, to force the lpiston 16 down and openthe main valve dis 6, thus admitting steam lthroughi .the main valve tothe service side. ressure on the piston 16 will lower the same becausethe area of-the valve diskV 6 is only about onelialf that of the piston1.6.

When the `pressure in the system or servv assage of the 50 gha suchseat.

'p60 obvious, that without detracting quantity passes'through theopening 3, and

in other cases where the opening 3 is required to be opened but a smallamount, or rapidly opened and closed, that there is a likelihood of thevalve disk 6` pulsating, vi-

brating or chattering against the seat 9. In

order to prevent such vibrating, pulsating and chatterin I lform thevalve disk 6 with a hemisp erical part or closure extension 40 on itsupper lsurface projectin upwardly through the opening 3. The iameter of'such closure extension at ifs lower edge is substantially the same asthe diameter of the opening 3. It will be noted, that because of theextension 40 on the valve disk 6, that the extent to which the opening 3will .be opened b 'downward travel of the disk 6 will not in directproportion to the distance of such travel;' but that the of the downwardmovement of ,3 0 such disk 6 will serve to open the opening 3 but asmall amount, and further movement will open itl more rapidly. InI otherwords in or er to o n the openi 3, a sma amount -at iipi'gt,considerable downward l movement of the valve disk 6 is r uired.

During the downward travel of the isk 6, ,v however, as the extension 40is drawn out ofthe openingl 3, such -opening will be opened more andmore rapidly. The pury 40 pose of this construction of the valve disk 6with the extension part 40, is thus to require considerable movement ofthe disk 6 at the start in order to give a small opening. yglaecxause ofthis constructiom therefore, 4 fwhere the demand for steam is slight sothat 'only a small uanti passes through A the opning 3, the v ve dis 6will nevertheless a considerable distance below the seat 9 so that thereis no possibility of its plulsatingngainst Also in cases w erethe demandor steam is-'slilit and intermittent, causing successive sin openings,each such openttering or vibrating or ing will require a movement of thedisk 6'l downwardly a considerable distance from the seat 9,thusplrevent' any chattering on the seat. Alt ough I ave shown theextension 40 on the valve disk 6 as being it is substantiallyhemispherical in shape,

om the it may vhave any of shapes. For exbe ellipsoidal. In

. .spirit of this invention,

one-cfa great variety ample, it ma p neral, may sai thatthe disk 6 musteproj -vided with an extension of any suitable shape, projectin throughthe opening 3 so that considerab e downward movement of the disk will berequired at the start to open such opening a small distance.

VVhi e I have shown and described certain embodiments of my invention,it is to be understood that it is capable of many modifications Changestherefore in the construction and arrangement may be made Withoutdeparting from the spirit and scope of the invention as disclosed in theappended claims, in which it is my intention to claim all noveltyinherent in 'my invention as broadly as ossible in view of the priorart.

What I c aim as new, and desire to secure by Letters Patent is:

1. A regulating Valve comprising, in combination, a valve casing havinginlet and outlet chambers and an opening connecting said chambers, avalve seat about said opening, a .valve disk coacting with said seat, aprojection carried by said disk extending into said opening andsubstantially filling the same when the valve is closed, said disk soshaped asA to require a substantial movement of the valve to allow smallquantities of fluid to pass and to increase the effective opening by arapidl increasing ratio as the valve is opened furt er, a valve stein onthe valve disk, a piston on the valve stem adapted to operate in acylinder, a passage leading from the inlet ychamber to one end of saidcylinder, and a valve in said passage controlled by pressureon theservice vside of the regulating valve.

2. A regulating valve comprising, in combination, a valve casing havinginlet andA outlet chambers and an opening connecting said chambers, avalve seat about said opening, a valve disk coactin with said seat, aprojection' carried by said disk extending into said o ening andsubstantially filling the saine wen the valve is closed, said dis soshaped as to require a substantial movement of the valve to allow smallquantities 11 of fluid to pass and to increase the e'ective opening by arapidly increasing ratio as the valve isuopened further, a valve stem onthe valve disk, a piston on the valve stem adapted to operate in acylinder, a passage leading from the inlet chamber to 'one end of saidcylinder, a valve in said assage, a valve stem on said valve, and adiaphr adapted. to move said valve stem, said aphragm adapted to bemoved by pressure on the service side ofthe regulating valve.

3. YIn a regulating va ve, a supply opening on one side, a serviceopening on the other side, a main 8.88380 through the valve connectingsaid o a valve l controlled opening in said4 passage, a seatlsurrounding said opening, a valve atin said opening, said valvecomprising a va ve disk with its periphery adapted to seat 0n the seatsurrounding said opening and l having a closure extension projectingthrough the opening inside of and free from the surrounding seat andsubstantially closin said opening when the periphery of the va ve diskis seated, said extension bein relatively wide where it is-'oined to thedis and narrow towards its ot er end, whereby substantial movement ofthe valve is required to allow small quantities of fluid to pass andfurther movement opens the openin in increasing ratio, said valve diskalso being provided with a valve stem, a pistonon the valve stem adaptedto operate in a cylinder, a passage leadin from the inlet c amber to oneend of sai cylinder, and a valve in said passage controlled by' pressureon the service side of the regulating valve.

a. lin a regulating valve, a supply opening on one side, a serviceopening on the other side, a main passage throughthe valve connectingsaid openings, a valve controlled opening in said passage, a seatsurrounding said opening, a valve regulating said opening, said valvecompris-ing a valve disk with its periphery adapted to seatl on the seatsurrounding said openin and having a closure extension projecting trough the openingl in'- side of and free from the surrounding seat andsubstantially closing said opening when the periphery of the valve diskis seated,

said extension being substantially hemispherical in shape, wherebysubstantial movement of the valve is required to allow 'small quantitiesof uid to pass and further controlled by pressure on the service side ofthe regulating valve.

ln'testmony whereof, l have hereunto set my hand and seal this 12th dayof August, A.. D. 1920. y

HARRY J. RICHTER'. [n a]

